Now, let's look at the types of systems. Exhaust-only. All right, let's get this one out of the way first. Using exhaust fans is great for local ventilation of bathrooms, kitchens, garages, and sub-slab areas (for radon control), but it's not a great strategy for whole-house ventilation. It does have some advantages: It's cheap.
When writing Common Sense, Paine wanted to show the common man why the United States should be independent of England. He also wanted to show these people that they had the resources needed to build a navy.
Thomas Paine, Common Sense. This wonderful site contains Common Sense in its entirety. Written in 1776, Common Sense caused a revolution in the way many people thought. Thomas Paine's pamphlet was so important because he expressed clearly and lucidly what so many people were thinking, but were not able to put in words.